{"version":3,"sources":["../../src/exact/v1/client/scheme.ts","../../src/exact/v1/facilitator/scheme.ts","../../src/exact/facilitator/eip3009-utils.ts","../../src/v1/index.ts"],"sourcesContent":["import {\n Network,\n PaymentPayload,\n PaymentRequirements,\n SchemeNetworkClient,\n} from \"@x402/core/types\";\nimport { PaymentRequirementsV1 } from \"@x402/core/types/v1\";\nimport { getAddress } from \"viem\";\nimport { authorizationTypes } from \"../../../constants\";\nimport { ClientEvmSigner } from \"../../../signer\";\nimport { ExactEvmPayloadV1 } from \"../../../types\";\nimport { createNonce } from \"../../../utils\";\nimport { EvmNetworkV1, getEvmChainIdV1 } from \"../../../v1\";\n\n/**\n * EVM client implementation for the Exact payment scheme (V1).\n */\nexport class ExactEvmSchemeV1 implements SchemeNetworkClient {\n readonly scheme = \"exact\";\n\n /**\n * Creates a new ExactEvmClientV1 instance.\n *\n * @param signer - The EVM signer for client operations\n */\n constructor(private readonly signer: ClientEvmSigner) {}\n\n /**\n * Creates a payment payload for the Exact scheme (V1).\n *\n * @param x402Version - The x402 protocol version\n * @param paymentRequirements - The payment requirements\n * @returns Promise resolving to a payment payload\n */\n async createPaymentPayload(\n x402Version: number,\n paymentRequirements: PaymentRequirements,\n ): Promise<\n Pick & { scheme: string; network: Network }\n > {\n const selectedV1 = paymentRequirements as unknown as PaymentRequirementsV1;\n const nonce = createNonce();\n const now = Math.floor(Date.now() / 1000);\n\n const authorization: ExactEvmPayloadV1[\"authorization\"] = {\n from: this.signer.address,\n to: getAddress(selectedV1.payTo),\n value: selectedV1.maxAmountRequired,\n validAfter: (now - 600).toString(), // 10 minutes before\n validBefore: (now + selectedV1.maxTimeoutSeconds).toString(),\n nonce,\n };\n\n // Sign the authorization\n const signature = await this.signAuthorization(authorization, selectedV1);\n\n const payload: ExactEvmPayloadV1 = {\n authorization,\n signature,\n };\n\n return {\n x402Version,\n scheme: selectedV1.scheme,\n network: selectedV1.network,\n payload,\n };\n }\n\n /**\n * Sign the EIP-3009 authorization using EIP-712\n *\n * @param authorization - The authorization to sign\n * @param requirements - The payment requirements\n * @returns Promise resolving to the signature\n */\n private async signAuthorization(\n authorization: ExactEvmPayloadV1[\"authorization\"],\n requirements: PaymentRequirementsV1,\n ): Promise<`0x${string}`> {\n const chainId = getEvmChainIdV1(requirements.network as EvmNetworkV1);\n\n if (!requirements.extra?.name || !requirements.extra?.version) {\n throw new Error(\n `EIP-712 domain parameters (name, version) are required in payment requirements for asset ${requirements.asset}`,\n );\n }\n\n const { name, version } = requirements.extra;\n\n const domain = {\n name,\n version,\n chainId,\n verifyingContract: getAddress(requirements.asset),\n };\n\n const message = {\n from: getAddress(authorization.from),\n to: getAddress(authorization.to),\n value: BigInt(authorization.value),\n validAfter: BigInt(authorization.validAfter),\n validBefore: BigInt(authorization.validBefore),\n nonce: authorization.nonce,\n };\n\n return await this.signer.signTypedData({\n domain,\n types: authorizationTypes,\n primaryType: \"TransferWithAuthorization\",\n message,\n });\n }\n}\n","import {\n PaymentPayload,\n PaymentPayloadV1,\n PaymentRequirements,\n SchemeNetworkFacilitator,\n FacilitatorContext,\n SettleResponse,\n VerifyResponse,\n} from \"@x402/core/types\";\nimport { resolveDataSuffix } from \"../../../shared/extensions\";\nimport { verifyTypedDataSignature, classifyErc6492Payer } from \"../../../shared/verifySignature\";\nimport { PaymentRequirementsV1 } from \"@x402/core/types/v1\";\nimport { getAddress, Hex, isAddressEqual, parseErc6492Signature } from \"viem\";\nimport { authorizationTypes } from \"../../../constants\";\nimport { FacilitatorEvmSigner } from \"../../../signer\";\nimport { ExactEvmPayloadV1 } from \"../../../types\";\nimport { EvmNetworkV1, getEvmChainIdV1 } from \"../../../v1\";\nimport * as Errors from \"../../facilitator/errors\";\nimport {\n diagnoseEip3009SimulationFailure,\n executeTransferWithAuthorization,\n simulateEip3009Transfer,\n} from \"../../facilitator/eip3009-utils\";\n\nexport interface VerifyV1Options {\n /** Run onchain simulation. Defaults to true. */\n simulate?: boolean;\n}\n\nexport interface ExactEvmSchemeV1Config {\n /**\n * Allowlist of factory contract addresses (hex strings, case-insensitive) that the facilitator\n * will call when deploying an undeployed smart wallet via ERC-6492.\n *\n * A non-empty list enables ERC-4337 smart wallet deployment via EIP-6492. Facilitators must\n * explicitly list every factory they trust to prevent arbitrary transaction injection via\n * attacker-controlled ERC-6492 signature wrappers. An empty or omitted list denies all factory\n * deployment calls.\n *\n * @default []\n */\n eip6492AllowedFactories?: string[];\n /**\n * If enabled, simulates transaction before settling. Defaults to false, ie only simulate during verify.\n *\n * @default false\n */\n simulateInSettle?: boolean;\n}\n\n/**\n * EVM facilitator implementation for the Exact payment scheme (V1).\n */\nexport class ExactEvmSchemeV1 implements SchemeNetworkFacilitator {\n readonly scheme = \"exact\";\n readonly caipFamily = \"eip155:*\";\n private readonly config: Required;\n\n /**\n * Creates a new ExactEvmFacilitatorV1 instance.\n *\n * @param signer - The EVM signer for facilitator operations\n * @param config - Optional configuration for the facilitator\n */\n constructor(\n private readonly signer: FacilitatorEvmSigner,\n config?: ExactEvmSchemeV1Config,\n ) {\n this.config = {\n eip6492AllowedFactories: config?.eip6492AllowedFactories ?? [],\n simulateInSettle: config?.simulateInSettle ?? false,\n };\n }\n\n /**\n * Get mechanism-specific extra data for the supported kinds endpoint.\n * For EVM, no extra data is needed.\n *\n * @param _ - The network identifier (unused for EVM)\n * @returns undefined (EVM has no extra data)\n */\n getExtra(_: string): Record | undefined {\n return undefined;\n }\n\n /**\n * Get signer addresses used by this facilitator.\n * Returns all addresses this facilitator can use for signing/settling transactions.\n *\n * @param _ - The network identifier (unused for EVM, addresses are network-agnostic)\n * @returns Array of facilitator wallet addresses\n */\n getSigners(_: string): string[] {\n return [...this.signer.getAddresses()];\n }\n\n /**\n * Verifies a payment payload (V1).\n *\n * @param payload - The payment payload to verify\n * @param requirements - The payment requirements\n * @returns Promise resolving to verification response\n */\n async verify(\n payload: PaymentPayload,\n requirements: PaymentRequirements,\n ): Promise {\n return this._verify(payload, requirements);\n }\n\n /**\n * Settles a payment by executing the transfer (V1).\n *\n * @param payload - The payment payload to settle\n * @param requirements - The payment requirements\n * @param context - Optional facilitator context for extension capabilities\n * @returns Promise resolving to settlement response\n */\n async settle(\n payload: PaymentPayload,\n requirements: PaymentRequirements,\n context?: FacilitatorContext,\n ): Promise {\n const payloadV1 = payload as unknown as PaymentPayloadV1;\n const exactEvmPayload = payload.payload as ExactEvmPayloadV1;\n\n // Re-verify before settling\n const valid = await this._verify(payload, requirements, {\n simulate: this.config.simulateInSettle ?? false,\n });\n if (!valid.isValid) {\n return {\n success: false,\n network: payloadV1.network,\n transaction: \"\",\n errorReason: valid.invalidReason ?? Errors.ErrInvalidScheme,\n payer: exactEvmPayload.authorization.from,\n };\n }\n\n try {\n // Parse ERC-6492 signature if applicable (for optional deployment)\n const { address: factoryAddress, data: factoryCalldata } = parseErc6492Signature(\n exactEvmPayload.signature!,\n );\n\n // Deploy ERC-4337 smart wallet via EIP-6492 if factory is in the allowlist\n if (\n factoryAddress &&\n factoryCalldata &&\n !isAddressEqual(factoryAddress, \"0x0000000000000000000000000000000000000000\")\n ) {\n // Check if smart wallet is already deployed\n const payerAddress = exactEvmPayload.authorization.from;\n const bytecode = await this.signer.getCode({ address: payerAddress });\n\n if (!bytecode || bytecode === \"0x\") {\n const normalizedFactory = factoryAddress.toLowerCase();\n const isAllowed = (this.config.eip6492AllowedFactories ?? []).some(\n allowed => allowed.toLowerCase() === normalizedFactory,\n );\n if (!isAllowed) {\n return {\n success: false,\n errorReason: Errors.ErrFactoryNotAllowed,\n transaction: \"\",\n network: payloadV1.network,\n payer: exactEvmPayload.authorization.from,\n };\n }\n\n // Send the factory calldata directly as a transaction\n // The factoryCalldata already contains the complete encoded function call\n const deployTx = await this.signer.sendTransaction({\n to: factoryAddress as Hex,\n data: factoryCalldata as Hex,\n });\n\n // Wait for deployment and verify it actually succeeded.\n const deployReceipt = await this.signer.waitForTransactionReceipt({ hash: deployTx });\n if (deployReceipt.status !== \"success\") {\n return {\n success: false,\n errorReason: Errors.ErrSmartWalletDeploymentFailed,\n transaction: \"\",\n network: payloadV1.network,\n payer: exactEvmPayload.authorization.from,\n };\n }\n\n // Do NOT re-simulate the transfer here. The authoritative pre-check is the atomic\n // deploy+transfer simulation in verify; a second standalone eth_call after the real\n // deploy tx races the deploy's state propagation across load-balanced RPC nodes and\n // false-rejected valid wallets. The on-chain transferWithAuthorization below is the\n // definitive signature check; a genuinely unsupported inner signature reverts there\n // and is classified by parseEip3009TransferError.\n }\n }\n\n // V1 payloads carry no extensions, so the builder-code suffix can only contain the\n // facilitator's own wallet code (`w`); client app (`a`) and service (`s`) codes are\n // always absent.\n const dataSuffix = await resolveDataSuffix(context, {\n paymentPayload: payload,\n paymentRequirements: requirements,\n });\n\n const tx = await executeTransferWithAuthorization(\n this.signer,\n getAddress(requirements.asset),\n exactEvmPayload,\n dataSuffix,\n );\n\n // Wait for transaction confirmation\n const receipt = await this.signer.waitForTransactionReceipt({ hash: tx });\n\n if (receipt.status !== \"success\") {\n return {\n success: false,\n errorReason: Errors.ErrTransactionFailed,\n transaction: tx,\n network: payloadV1.network,\n payer: exactEvmPayload.authorization.from,\n };\n }\n\n return {\n success: true,\n transaction: tx,\n network: payloadV1.network,\n payer: exactEvmPayload.authorization.from,\n };\n } catch (error) {\n return {\n success: false,\n errorReason: error instanceof Error ? error.message : Errors.ErrTransactionFailed,\n transaction: \"\",\n network: payloadV1.network,\n payer: exactEvmPayload.authorization.from,\n };\n }\n }\n\n /**\n * Internal verify with optional simulation control.\n *\n * @param payload - The payment payload to verify\n * @param requirements - The payment requirements\n * @param options - Verification options (e.g. simulate)\n * @returns Promise resolving to verification response\n */\n private async _verify(\n payload: PaymentPayload,\n requirements: PaymentRequirements,\n options?: VerifyV1Options,\n ): Promise {\n const requirementsV1 = requirements as unknown as PaymentRequirementsV1;\n const payloadV1 = payload as unknown as PaymentPayloadV1;\n const exactEvmPayload = payload.payload as ExactEvmPayloadV1;\n const payer = exactEvmPayload.authorization.from;\n let eip6492Deployment:\n | { factoryAddress: `0x${string}`; factoryCalldata: `0x${string}` }\n | undefined;\n\n // Verify scheme matches\n if (payloadV1.scheme !== \"exact\" || requirements.scheme !== \"exact\") {\n return {\n isValid: false,\n invalidReason: Errors.ErrInvalidScheme,\n payer,\n };\n }\n\n // Get chain configuration\n let chainId: number;\n try {\n chainId = getEvmChainIdV1(payloadV1.network as EvmNetworkV1);\n } catch {\n return {\n isValid: false,\n invalidReason: Errors.ErrNetworkMismatch,\n payer,\n };\n }\n\n if (!requirements.extra?.name || !requirements.extra?.version) {\n return {\n isValid: false,\n invalidReason: Errors.ErrMissingEip712Domain,\n payer,\n };\n }\n\n const { name, version } = requirements.extra as { name: string; version: string };\n const erc20Address = getAddress(requirements.asset);\n\n // Verify network matches\n if (payloadV1.network !== requirements.network) {\n return {\n isValid: false,\n invalidReason: Errors.ErrNetworkMismatch,\n payer,\n };\n }\n\n // Build typed data for signature verification\n const permitTypedData = {\n types: authorizationTypes,\n primaryType: \"TransferWithAuthorization\" as const,\n domain: {\n name,\n version,\n chainId,\n verifyingContract: erc20Address,\n },\n message: {\n from: exactEvmPayload.authorization.from,\n to: exactEvmPayload.authorization.to,\n value: BigInt(exactEvmPayload.authorization.value),\n validAfter: BigInt(exactEvmPayload.authorization.validAfter),\n validBefore: BigInt(exactEvmPayload.authorization.validBefore),\n nonce: exactEvmPayload.authorization.nonce,\n },\n };\n\n const signature = exactEvmPayload.signature!;\n\n // Classify the payer (counterfactual vs deployed) and extract inner sig in one shot.\n const {\n isCounterfactual,\n innerSignature,\n eip6492Deployment: classification6492,\n } = await classifyErc6492Payer(this.signer, signature, payer);\n\n if (classification6492) {\n eip6492Deployment = classification6492;\n }\n\n if (isCounterfactual) {\n // Mirror settle's allowlist gate so verify predicts settle: a counterfactual payment whose\n // factory is not allowlisted is rejected at settle, so reject it here too.\n const factory = classification6492?.factoryAddress;\n const factoryAllowed =\n !!factory &&\n this.config.eip6492AllowedFactories.some(\n a => a.trim().toLowerCase() === factory.toLowerCase(),\n );\n if (!factoryAllowed) {\n return {\n isValid: false,\n invalidReason: Errors.ErrFactoryNotAllowed,\n payer,\n };\n }\n }\n\n if (!isCounterfactual) {\n // Non-counterfactual path: verify using the strict primitive that mirrors\n // on-chain SignatureChecker semantics (ecrecover for EOAs, strict EIP-1271\n // for any address with code). No ECDSA fallback for code addresses.\n const isValid = await verifyTypedDataSignature(this.signer, {\n address: payer,\n ...permitTypedData,\n signature: innerSignature,\n });\n if (!isValid) {\n return {\n isValid: false,\n invalidReason: Errors.ErrInvalidSignature,\n payer,\n };\n }\n }\n // Counterfactual path: defer to on-chain simulation which deploys + verifies atomically.\n\n // Verify payment recipient matches\n if (getAddress(exactEvmPayload.authorization.to) !== getAddress(requirements.payTo)) {\n return {\n isValid: false,\n invalidReason: Errors.ErrRecipientMismatch,\n payer,\n };\n }\n\n // Verify validBefore is in the future (with 6 second buffer for block time)\n const now = Math.floor(Date.now() / 1000);\n if (BigInt(exactEvmPayload.authorization.validBefore) < BigInt(now + 6)) {\n return {\n isValid: false,\n invalidReason: Errors.ErrValidBeforeExpired,\n payer,\n };\n }\n\n // Verify validAfter is not in the future\n if (BigInt(exactEvmPayload.authorization.validAfter) > BigInt(now)) {\n return {\n isValid: false,\n invalidReason: Errors.ErrValidAfterInFuture,\n payer,\n };\n }\n\n // Verify amount exactly matches requirements\n if (BigInt(exactEvmPayload.authorization.value) !== BigInt(requirementsV1.maxAmountRequired)) {\n return {\n isValid: false,\n invalidReason: Errors.ErrInvalidAuthorizationValue,\n payer,\n };\n }\n\n // Transaction simulation\n if (options?.simulate !== false) {\n const simulationSucceeded = await simulateEip3009Transfer(\n this.signer,\n erc20Address,\n exactEvmPayload,\n eip6492Deployment,\n );\n if (!simulationSucceeded) {\n return diagnoseEip3009SimulationFailure(\n this.signer,\n erc20Address,\n exactEvmPayload,\n requirements,\n requirementsV1.maxAmountRequired,\n );\n }\n }\n\n return {\n isValid: true,\n invalidReason: undefined,\n payer,\n };\n }\n}\n","import { PaymentRequirements, VerifyResponse } from \"@x402/core/types\";\nimport { encodeFunctionData, getAddress, Hex, parseErc6492Signature, parseSignature } from \"viem\";\nimport { eip3009ABI } from \"../../constants\";\nimport { multicall, ContractCall, RawContractCall } from \"../../multicall\";\nimport { FacilitatorEvmSigner } from \"../../signer\";\nimport { ExactEIP3009Payload } from \"../../types\";\nimport * as Errors from \"./errors\";\n\nexport interface Eip6492Deployment {\n factoryAddress: `0x${string}`;\n factoryCalldata: `0x${string}`;\n}\n\n/**\n * Outcome of a transfer simulation. `error` is populated only when the underlying `eth_call`\n * threw (revert or transport), letting callers distinguish a contract revert from an RPC failure.\n */\nexport interface SimulateEip3009Result {\n ok: boolean;\n error?: unknown;\n}\n\n/**\n * Simulates transferWithAuthorization via eth_call.\n * Returns true if simulation succeeded, false if it failed.\n *\n * @param signer - EVM signer for contract reads\n * @param erc20Address - ERC-20 token contract address\n * @param payload - EIP-3009 transfer authorization payload\n * @param eip6492Deployment - Optional EIP-6492 factory info for undeployed smart wallets\n *\n * @returns true if simulation succeeded, false if it failed\n */\nexport async function simulateEip3009Transfer(\n signer: FacilitatorEvmSigner,\n erc20Address: `0x${string}`,\n payload: ExactEIP3009Payload,\n eip6492Deployment?: Eip6492Deployment,\n): Promise {\n return (await simulateEip3009TransferResult(signer, erc20Address, payload, eip6492Deployment)).ok;\n}\n\n/**\n * Like {@link simulateEip3009Transfer} but returns the thrown error (if any) alongside the\n * boolean outcome, so callers can tell a contract revert apart from a transport/RPC failure.\n *\n * @param signer - EVM signer for contract reads\n * @param erc20Address - ERC-20 token contract address\n * @param payload - EIP-3009 transfer authorization payload\n * @param eip6492Deployment - Optional EIP-6492 factory info for undeployed smart wallets\n * @returns The simulation outcome and, on failure via a thrown error, that error.\n */\nexport async function simulateEip3009TransferResult(\n signer: FacilitatorEvmSigner,\n erc20Address: `0x${string}`,\n payload: ExactEIP3009Payload,\n eip6492Deployment?: Eip6492Deployment,\n): Promise {\n const auth = payload.authorization;\n const transferArgs = [\n getAddress(auth.from),\n getAddress(auth.to),\n BigInt(auth.value),\n BigInt(auth.validAfter),\n BigInt(auth.validBefore),\n auth.nonce,\n ] as const;\n\n if (eip6492Deployment) {\n const { signature: innerSignature } = parseErc6492Signature(payload.signature!);\n const transferCalldata = encodeFunctionData({\n abi: eip3009ABI,\n functionName: \"transferWithAuthorization\",\n args: [...transferArgs, innerSignature],\n });\n\n try {\n const results = await multicall(signer.readContract.bind(signer), [\n {\n address: getAddress(eip6492Deployment.factoryAddress),\n callData: eip6492Deployment.factoryCalldata,\n } satisfies RawContractCall,\n {\n address: erc20Address,\n callData: transferCalldata,\n } satisfies RawContractCall,\n ]);\n\n return { ok: results[1]?.status === \"success\" };\n } catch (error) {\n return { ok: false, error };\n }\n }\n\n const sig = payload.signature!;\n const sigLength = sig.startsWith(\"0x\") ? sig.length - 2 : sig.length;\n const isECDSA = sigLength === 130;\n\n try {\n if (isECDSA) {\n const parsedSig = parseSignature(sig);\n await signer.readContract({\n address: erc20Address,\n abi: eip3009ABI,\n functionName: \"transferWithAuthorization\",\n args: [\n ...transferArgs,\n (parsedSig.v as number | undefined) ?? parsedSig.yParity,\n parsedSig.r,\n parsedSig.s,\n ],\n });\n } else {\n await signer.readContract({\n address: erc20Address,\n abi: eip3009ABI,\n functionName: \"transferWithAuthorization\",\n args: [...transferArgs, sig],\n });\n }\n return { ok: true };\n } catch (error) {\n return { ok: false, error };\n }\n}\n\n/**\n * After simulation fails, runs a single diagnostic multicall to determine the most specific error reason.\n * Checks balanceOf, name, version and authorizationState in one RPC round-trip.\n *\n * @param signer - EVM signer used for the payment\n * @param erc20Address - Address of the ERC-20 token contract\n * @param payload - The EIP-3009 transfer authorization payload\n * @param requirements - Payment requirements to validate against\n * @param amountRequired - Required amount for the payment (balance check)\n *\n * @returns Promise resolving to the verification result with validity and optional invalid reason\n */\nexport async function diagnoseEip3009SimulationFailure(\n signer: FacilitatorEvmSigner,\n erc20Address: `0x${string}`,\n payload: ExactEIP3009Payload,\n requirements: PaymentRequirements,\n amountRequired: string,\n): Promise {\n const payer = payload.authorization.from;\n\n const diagnosticCalls: ContractCall[] = [\n {\n address: erc20Address,\n abi: eip3009ABI,\n functionName: \"balanceOf\",\n args: [payload.authorization.from],\n },\n {\n address: erc20Address,\n abi: eip3009ABI,\n functionName: \"name\",\n },\n {\n address: erc20Address,\n abi: eip3009ABI,\n functionName: \"version\",\n },\n {\n address: erc20Address,\n abi: eip3009ABI,\n functionName: \"authorizationState\",\n args: [payload.authorization.from, payload.authorization.nonce],\n },\n ];\n\n try {\n const results = await multicall(signer.readContract.bind(signer), diagnosticCalls);\n\n const [balanceResult, nameResult, versionResult, authStateResult] = results;\n\n if (authStateResult.status === \"failure\") {\n return { isValid: false, invalidReason: Errors.ErrEip3009NotSupported, payer };\n }\n\n if (authStateResult.status === \"success\" && authStateResult.result === true) {\n return { isValid: false, invalidReason: Errors.ErrEip3009NonceAlreadyUsed, payer };\n }\n\n if (\n nameResult.status === \"success\" &&\n requirements.extra?.name &&\n nameResult.result !== requirements.extra.name\n ) {\n return { isValid: false, invalidReason: Errors.ErrEip3009TokenNameMismatch, payer };\n }\n\n if (\n versionResult.status === \"success\" &&\n requirements.extra?.version &&\n versionResult.result !== requirements.extra.version\n ) {\n return { isValid: false, invalidReason: Errors.ErrEip3009TokenVersionMismatch, payer };\n }\n\n if (balanceResult.status === \"success\") {\n const balance = balanceResult.result as bigint;\n if (balance < BigInt(amountRequired)) {\n return {\n isValid: false,\n invalidReason: Errors.ErrEip3009InsufficientBalance,\n payer,\n };\n }\n }\n } catch {\n // Diagnostic multicall failed — fall through to generic error\n }\n\n return { isValid: false, invalidReason: Errors.ErrEip3009SimulationFailed, payer };\n}\n\n/**\n * Maps an EIP-3009 contract revert error to a specific error code.\n * Falls back to ErrTransactionFailed when the revert reason is unknown.\n *\n * @param error - The error thrown during transfer execution\n * @returns A specific error reason string\n */\nexport function parseEip3009TransferError(error: unknown): string {\n const msg = error instanceof Error ? error.message : String(error);\n if (/authorization.*(expired|valid before)/i.test(msg) || /AuthorizationExpired/i.test(msg)) {\n return Errors.ErrValidBeforeExpired;\n }\n if (/authorization.*not.*valid|AuthorizationNotYetValid/i.test(msg)) {\n return Errors.ErrValidAfterInFuture;\n }\n if (/authorization.*used|AuthorizationAlreadyUsed|AuthorizationUsedOrCanceled/i.test(msg)) {\n return Errors.ErrEip3009NonceAlreadyUsed;\n }\n if (/transfer.*exceeds.*balance|insufficient.*balance|ERC20InsufficientBalance/i.test(msg)) {\n return Errors.ErrEip3009InsufficientBalance;\n }\n if (/invalid.*signature|SignerMismatch|InvalidSignatureV|InvalidSignatureS/i.test(msg)) {\n return Errors.ErrInvalidSignature;\n }\n return Errors.ErrTransactionFailed;\n}\n\n/**\n * Executes transferWithAuthorization onchain.\n *\n * @param signer - EVM signer for contract writes\n * @param erc20Address - ERC-20 token contract address\n * @param payload - EIP-3009 transfer authorization payload\n * @param dataSuffix - Optional hex bytes to append after the ABI-encoded calldata\n *\n * @returns Transaction hash\n */\nexport async function executeTransferWithAuthorization(\n signer: FacilitatorEvmSigner,\n erc20Address: `0x${string}`,\n payload: ExactEIP3009Payload,\n dataSuffix?: Hex,\n): Promise {\n const { signature } = parseErc6492Signature(payload.signature!);\n const signatureLength = signature.startsWith(\"0x\") ? signature.length - 2 : signature.length;\n const isECDSA = signatureLength === 130;\n\n const auth = payload.authorization;\n const baseArgs = [\n getAddress(auth.from),\n getAddress(auth.to),\n BigInt(auth.value),\n BigInt(auth.validAfter),\n BigInt(auth.validBefore),\n auth.nonce,\n ] as const;\n\n let signatureArgs: readonly unknown[];\n if (isECDSA) {\n const parsedSig = parseSignature(signature);\n signatureArgs = [\n (parsedSig.v as number | undefined) || parsedSig.yParity,\n parsedSig.r,\n parsedSig.s,\n ];\n } else {\n signatureArgs = [signature];\n }\n\n return signer.writeContract({\n address: erc20Address,\n abi: eip3009ABI,\n functionName: \"transferWithAuthorization\",\n args: [...baseArgs, ...signatureArgs],\n dataSuffix,\n });\n}\n","export { ExactEvmSchemeV1 } from \"../exact/v1\";\n\nexport const EVM_NETWORK_CHAIN_ID_MAP = {\n ethereum: 1,\n sepolia: 11155111,\n abstract: 2741,\n \"abstract-testnet\": 11124,\n \"base-sepolia\": 84532,\n base: 8453,\n \"avalanche-fuji\": 43113,\n avalanche: 43114,\n iotex: 4689,\n sei: 1329,\n \"sei-testnet\": 1328,\n polygon: 137,\n \"polygon-amoy\": 80002,\n peaq: 3338,\n story: 1514,\n educhain: 41923,\n \"skale-base-sepolia\": 324705682,\n megaeth: 4326,\n monad: 143,\n stable: 988,\n \"stable-testnet\": 2201,\n} as const;\n\nexport type EvmNetworkV1 = keyof typeof EVM_NETWORK_CHAIN_ID_MAP;\n\nexport const NETWORKS: string[] = Object.keys(EVM_NETWORK_CHAIN_ID_MAP);\n\n/**\n * Extract chain ID from a v1 legacy network name.\n *\n * @param network - The v1 network name (e.g., \"base-sepolia\", \"polygon\")\n * @returns The numeric chain ID\n * @throws Error if the network name is not a known v1 network\n */\nexport function getEvmChainIdV1(network: string): number {\n const chainId = EVM_NETWORK_CHAIN_ID_MAP[network as EvmNetworkV1];\n if (!chainId) {\n throw new Error(`Unsupported v1 network: ${network}`);\n }\n return 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